#8008: Implement an rref() function which works over the fraction field of the
base ring of a matrix
----------------------------------+-----------------------------------------
Reporter: jason | Owner: was
Type: defect | Status: needs_work
Priority: major | Milestone:
Component: linear algebra | Keywords:
Author: Jason Grout | Upstream: N/A
Reviewer: Sebastian Pancratz | Merged:
Work_issues: needs rebase |
----------------------------------+-----------------------------------------
Changes (by mvngu):
* status: positive_review => needs_work
* work_issues: => needs rebase
Comment:
I got a hunk failure after applying
[http://trac.sagemath.org/sage_trac/attachment/ticket/8008/trac-8008-rref.patch
trac-8008-rref.patch], then
[http://trac.sagemath.org/sage_trac/attachment/ticket/8008/trac-8008-fixes.patch
trac-8008-fixes.patch]:
{{{
[mv...@sage sage-main]$ hg qimport http://trac.sagemath.org/sage_trac/raw-
attachment/ticket/8008/trac-8008-rref.patch && hg qpush
adding trac-8008-rref.patch to series file
applying trac-8008-rref.patch
now at: trac-8008-rref.patch
[mv...@sage sage-main]$ hg qimport http://trac.sagemath.org/sage_trac/raw-
attachment/ticket/8008/trac-8008-fixes.patch && hg qpush
adding trac-8008-fixes.patch to series file
applying trac-8008-fixes.patch
patching file sage/matrix/matrix2.pyx
Hunk #3 FAILED at 4273
1 out of 3 hunks FAILED -- saving rejects to file
sage/matrix/matrix2.pyx.rej
patch failed, unable to continue (try -v)
patch failed, rejects left in working dir
errors during apply, please fix and refresh trac-8008-fixes.patch
[mv...@sage sage-main]$ cat sage/matrix/matrix2.pyx.rej
--- matrix2.pyx
+++ matrix2.pyx
@@ -4267,12 +4274,14 @@
"""
Return the echelon form of self.
- .. note:: This row reduction does not use division if the
- matrix is not over a field (e.g., if the matrix is over the
- integers). If you want to calculate the echelon form using
- division, then use :meth:`rref`, which assumes that the matrix
- entries are in a field (specifically, the field of fractions
- of the base ring of the matrix).
+ .. note::
+
+ This row reduction does not use division if the
+ matrix is not over a field (e.g., if the matrix is over
+ the integers). If you want to calculate the echelon form
+ using division, then use :meth:`rref`, which assumes that
+ the matrix entries are in a field (specifically, the field
+ of fractions of the base ring of the matrix).
INPUT:
}}}
Perhaps this ticket needs a rebase?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8008#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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